| 2023 Hardiness Zone: | Zone 6a: -10°F to -5°F Zone 5b: -15°F to -10°F |
| 2012 Hardiness Zone: | Zone 5a: -20°F to -15°F Zone 5b: -15°F to -10°F |
| 1990 Hardiness Zone: | Zone 5a: -20F to -15F |
| Average First Frost Date: | Oct. 1 - Oct. 10 |
| Average Last Frost Date: | May 21 - May 31 |
| Koppen-Geiger Climate Zone: | Dfb - Humid Continental Mild Summer, Wet All Year |
| Ecoregion: | 61c - Low Lime Drift Plain |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 16345 - Russell, PA | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 15 | 15 | 23 | 33 | 44 | 53 | 57 | 56 | 49 | 39 | 31 | 21 | 36 |
| Avg Max Temp (°F) | 31 | 34 | 44 | 56 | 68 | 76 | 80 | 79 | 71 | 60 | 47 | 35 | 57 |
| Avg Precip (In.) | 2.99 | 2.4 | 3.3 | 3.54 | 3.84 | 5.04 | 4.19 | 4.18 | 4.4 | 3.55 | 3.9 | 3.61 | 44.95 |